9 hours.
9 hours.
From midnight (am) to Noon (pm) is 12 hours.
AM is from midnight to noon and PM is from noon to midnight. AM and PM are twelve hours each, adding up to twenty-four hours.
8.5
10.5 hours
7 and a half hours
There are 14 hours and 45 minutes between 3:45 pm and 6:30 am.
11 hours and 45 minutes.
11 hours and 45 minutes.
There are 9 hours between 630 am and 930 am.
(11+24k) hours where k is an integer.